package cn.common.utils;

import java.util.Random;

public class RandomUtil {
    public static String genWelRandomNum() {
        int maxNum = 36;
        int i;
        int count = 0;
        char[] str = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S',
                'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};
        StringBuffer pwd = new StringBuffer();
        Random r = new Random();
        while (count < 6) {
            i = Math.abs(r.nextInt(maxNum));
            pwd.append(str[i]);
            count++;
        }
        return pwd.toString();
    }

    public static String genUuid() {
        int maxNum = 8;
        int i;
        int count = 0;
        char[] str = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};
        StringBuffer pwd = new StringBuffer("");
        Random r = new Random();
        while (count < 8) {
            i = Math.abs(r.nextInt(maxNum));
            pwd.append(str[i]);
            count++;
        }
        return pwd.toString();
    }
}
